Mars, often imagined as a lifeless desert battered by radiation and cold, holds within its crust the haunting memory of a ...

The Old Caves Crater Trail is one of the best hikes in Arizona for exploring caves built by the region's earliest inhabitants ...

NASA's Mariner 4 captured the first-ever close-up image of Mars on July 14, 1965. While waiting for the data to be processed ...

Meteor showers in July 2025 include the Perseids, Alpha Capricornids and Delta Aquariids. Here's when each shower peaks and how to see it in Arizona.

NASA astronaut Don Pettit has just shared a beautiful shot of the Grand Canyon captured from the space station during his recent stay there.

A trip to Las Vegas wouldn't be complete without experiencing the awe-inspiring natural wonders just outside of it — particularly the Grand Canyon. We've rounded up the best Grand Canyon tours ...

Grand Canyon of the Yellowstone is ranked #1 out of 17 things to do in Yellowstone National Park. See pictures and our review of Grand Canyon of the Yellowstone.

From unexplained phenomena to baffling disappearances, follow the clues while discovering our country’s treasured protected ...

In what year was Yellowstone National Park established as the world's first national park? Test your knowledge of Yellowstone National Park! Attempt this GK quiz on its location, wildlife, and facts ...

Firefall’s rock and roll is synonymous with Boulder, Colorado, but founding member Jock Bartley recalls other favorite travel ...

Grand Canyon Weather Forecasts. Weather Underground provides local & long-range weather forecasts, weatherreports, maps & tropical weather conditions for the Grand Canyon area.